Timeline of the Vietnam War: 1967-1968

U.S. General Westmoreland begged for more troops as the Viet Cong launched the Tet Offensive, a coordinated attack on more than 30 sites in South Vietnam. Anti-war protests grew ever larger and louder; the Rev. Martin Luther King, Jr. denounced the war. Then, U.S. troops commited a hideous war crime, slaughtering 300-500 unarmed Vietnamese civilians (mostly women and children) at My Lai.